iOS Saving data in plist

[iphonejudy]

Reading and writing data in to plist r working fine.But when i run the app second time,I found that the datas r not saved.

-(void)readFromList
{
	
	NSLog(@"readFromList");
	
    NSString* plistPath = nil;
	NSFileManager* manager = [NSFileManager defaultManager];
	if (plistPath = [[[NSBundle mainBundle] bundlePath] stringByAppendingPathComponent:@"Jsonapp.plist"]) 
	{
	NSDictionary *plistData = [[NSDictionary dictionaryWithContentsOfFile:plistPath] retain];	
	for (id key in plistData ) {
		user = [plistData objectForKey:@"Username"];
		pass=[plistData objectForKey:@"Password"];
		NSLog(@"user=%@",user);
		NSLog(@"bundle: key=%@, value=%@", key, [plistData objectForKey:key]);
	}
	if(edit == TRUE)
	{
		
	txtPassword.text=user;
	txtUsername.text=pass;
	}
	}
}


-(void)writeToList
{
	NSLog(@"Write to plist");
	NSString *error;
NSString* plistPath = nil;
NSFileManager* manager = [NSFileManager defaultManager];
if (plistPath = [[[NSBundle mainBundle] bundlePath] stringByAppendingPathComponent:@"Jsonapp.plist"]) 
{    NSLog(@"plistpath=%@",plistPath);
    if ([manager isWritableFileAtPath:plistPath]) 
    {
        NSMutableDictionary* infoDict = [NSMutableDictionary dictionaryWithContentsOfFile:plistPath];
        [infoDict setValue:txtPassword.text forKey:@"Password"]; 
		[infoDict setValue:txtUsername.text forKey:@"Username"];
		[infoDict writeToFile:plistPath atomically:NO];
        [manager changeFileAttributes:[NSDictionary dictionaryWithObject:[NSDate date] forKey:NSFileModificationDate] atPath: [[NSBundle mainBundle] bundlePath]];
        NSData *plistData = [NSPropertyListSerialization dataFromPropertyList:infoDict
																	   format:NSPropertyListXMLFormat_v1_0
															 errorDescription:&error];
	}
}

 

[xsmasher]

You're writing to the bundle. You need to be writing your file to the NSDocumentDirectory instead. I'd go back to your other code that was using NSDocumentDirectory.

 

[iphonejudy]

The below code is write the data .


Can anyone tell me reading the data from the plist?

- (void)writeToList 
{
	
	NSLog(@"writeToList");
	// Get path to settings file.
	NSError *error = nil;
	
	// Get path to settings file.
	NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
	NSString *documentsDirectory = [paths objectAtIndex:0];
	NSString *filePath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"Jsonapp.plist"]];
	
	// Get pointer to file manager.
	NSFileManager *fileManager = [NSFileManager defaultManager];
	
	// If the file does not exist, copy the generic starter theme data file from the app bundle.
	if(![fileManager fileExistsAtPath:filePath])
	{
		// Set path to the app bundle file.
		NSString *appBundleFilePath = [[NSBundle mainBundle] pathForResource:@"Jsonapp" ofType:@"plist"];
		
		// Copy the app bundle file to the document directory.
		[fileManager copyItemAtPath:appBundleFilePath toPath:filePath error:&error];
	}
	
	// Load the settings dictionary with the contents of the settings file.
	NSMutableDictionary *mDictData = [[NSMutableDictionary alloc] initWithContentsOfFile:filePath];
	if (mDictData) {
		NSLog(@"write file was found");
		[mDictData setValue:txtPassword.text forKey:@"Password"]; 
		[mDictData setValue:txtUsername.text forKey:@"Username"];
		[mDictData writeToFile:filePath atomically: YES];
		
		
	}
	else {
		NSLog(@"write file was NOT found");
	}

	
}

 

[xsmasher]

You have the line to read the file:

NSMutableDictionary *mDictData = [[NSMutableDictionary alloc] initWithContentsOfFile:filePath];

and the code to get the data out of the file:

user = [mDictData objectForKey:@"Username"];
pass = [mDictData objectForKey:@"Password"];

The code you posted to write the file will only work if there's a matching file included in the bundle - is that what you intend?